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Sunspot Numbers
derived from Sunspot Drawings at Kanzelhöhe Observatory
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End Date
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Data Selection
Groups north
Spots north
Groups south
Spots south
Tiny Groups
Total Number
Observing Quality
North reduced
South reduced
Total reduced
Observer
as csv list
The dataset is going back to 1948.
Between 1967 and 1969 there were data gaps due to building activities at the observatory.
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